Unit 1 Cultural relics Section Ⅲ Grammar-限制性定语从句和非限制性定语从句语法图解探究发现①This gift was the Amber Room, whichwas given this name because several tons of amber were used to make it.②The amber whichwas selected had a beautiful yellowbrown colour like honey.③However, the next King of Prussia, Frederick William Ⅰ ， to whom the amber room belonged, decided not to keep it.④Later, Catherine Ⅱ had the Amber Room moved to a palace outside St Petersburg whereshe spent her summers.⑤This was a time when the two countries were at war.⑥There is no doubt that the boxes were then put on a train for Königsberg, whichwas at that time a German city on the Baltic Sea.[我的发现](1)例句①中含 which 引导的非限制性定语从句；例句②中含 which 引导的限制性定语从句；在形式上非限制性定语从句与限制性定语从句的区别在于：关系词前是否有逗号。(2)以上例句中含非限制性定语从句的有①③⑥；含限制性定语从句的有②④⑤。一、定语从句的种类根据定语从句与先行词之间关系的紧密程度，我们将定语从句分为限制性定语从句和非限制性定语从句两种。1．限制性定语从句限制性定语从句是先行词在意义上不可缺少的定语，用于修饰和限定先行词。如果去掉，主句的意思就不完整。这种从句和主句的关系十分密切，两者之间不用逗号分开；关系代词在从句中作宾语时可以省略。引导限制性定语从句的关系代词有 who, whom, whose, that, which, as；关系副词有 where, when, why。This is the computer (that/which) he bought for his son yesterday.这是他昨天为儿子买的电脑。The woman who/that survived the earthquake is Amy's English teacher.在地震中幸存的那个女人是埃米的英语老师。2．非限制性定语从句非限制性定语从句和主句的关系不是十分密切，只是对先行词或主句作些附加说明，如果去掉，主句的意思仍然完整。这种从句和主句之间往往用逗号分开。引导非限制性定语从句的关系词与引导限制性定语从句的关系词略有不同。除 that 和 why 不能引导非限制性定语从句外，其他都可以。He is English, which I know from his...
